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CVE-2018-16658

Publication date 7 September 2018

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.1 · Medium

Score breakdown

An issue was discovered in the Linux kernel before 4.18.6. An information leak in cdrom_ioctl_drive_status in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940.

From the Ubuntu Security Team

It was discovered that an integer overflow existed in the CD-ROM driver of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory).

Status

Package Ubuntu Release Status
linux 18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-39.42
16.04 LTS xenial
Fixed 4.4.0-138.164
14.04 LTS trusty
Fixed 3.13.0-162.212
linux-aws 18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1027.27
16.04 LTS xenial
Fixed 4.4.0-1070.80
14.04 LTS trusty
Fixed 4.4.0-1032.35
linux-azure 18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1031.32
16.04 LTS xenial
Fixed 4.15.0-1031.32~16.04.1
14.04 LTS trusty
Fixed 4.15.0-1031.32~14.04.1
linux-azure-edge 18.10 cosmic Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial
Fixed 4.15.0-1031.32
14.04 LTS trusty Not in release
linux-euclid 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-flo 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-gcp 18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1024.25
16.04 LTS xenial
Fixed 4.15.0-1024.25~16.04.2
14.04 LTS trusty Not in release
linux-gke 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-goldfish 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-grouper 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-hwe 18.10 cosmic Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial
Fixed 4.15.0-39.42~16.04.1
14.04 LTS trusty Not in release
linux-hwe-edge 18.10 cosmic Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial
Fixed 4.15.0-39.42~16.04.1
14.04 LTS trusty Not in release
linux-kvm 18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1026.26
16.04 LTS xenial
Fixed 4.4.0-1036.42
14.04 LTS trusty Not in release
linux-lts-trusty 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-utopic 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-vivid 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-wily 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-xenial 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty
Fixed 4.4.0-138.164~14.04.1
linux-maguro 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-mako 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-manta 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oem 18.10 cosmic
Fixed 4.15.0-1026.31
18.04 LTS bionic
Fixed 4.15.0-1026.31
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-raspi2 18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1028.30
16.04 LTS xenial
Fixed 4.4.0-1099.107
14.04 LTS trusty Not in release
linux-snapdragon 18.10 cosmic Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial
Fixed 4.4.0-1103.108
14.04 LTS trusty Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

Severity score breakdown

Parameter Value
Base score 6.1 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3820-3
    • Linux kernel (Azure) vulnerabilities
    • 14 November 2018
    • USN-3820-2
    • Linux kernel (HWE) vulnerabilities
    • 14 November 2018
    • USN-3820-1
    • Linux kernel vulnerabilities
    • 14 November 2018
    • USN-3822-2
    • Linux kernel (Trusty HWE) vulnerabilities
    • 14 November 2018
    • USN-3822-1
    • Linux kernel vulnerabilities
    • 14 November 2018
    • USN-3797-2
    • Linux kernel (Xenial HWE) vulnerabilities
    • 23 October 2018
    • USN-3797-1
    • Linux kernel vulnerabilities
    • 23 October 2018

Other references